“What I see
happening around me is depressing. The knowledge of how to create stunning
reproduced sound exists, but because people in general don’t read, and many don’t
believe in science, the average consumer ends up living with inferior sound
when the same money could have purchased more. Countless hours in audio forum
discussions are no substitute for a few days reading peer-reviewed science.” Also “…far too many audiophiles follow
faith-based notions that the answers to perfect sound lie in distractions like
power cords, speaker wires, and exotic electronics. This is money not well
spent.”
These are the words
of Floyd E. Toole, as taken from an article that appeared in the December 2017
issue of AudioExpress, in an interview by author Shannon Becker. Floyd
Toole is the noted author of Sound Reproduction (Routledge, 3rd edition,
2018), a valued audio reference that’s now in its third printing. Prior to his
recent retirement Toole was VP in charge of acoustical engineering at Harman
International, one of the largest audio equipment conglomerates in the U.S. He
is widely recognized and respected for a lifetime of research and achievement
within the audio engineering industry.
One of the things
that Toole finds vexing is the illogical means favored by audiophiles to assess
the potential benefit of component upgrades. That process generally initiates
with obvious and overt disinterest in any of the related technical issues.
Critical detail like impedance compatibility, input sensitivity, and stage gain
get dismissed without review, overrun by the compulsion to conduct listening
trials of how stuff sounds. In truth, listening tests bear no
consequence. A comprehensive 2012 paper (http://www.pnas.org/content/110/36/14580)
that was devoted to the study of aural memory plainly shows that listening
perception is a fleeting sensory response that’s readily swamped by overriding
visual influences. Subjective aural impression is just too elusive to serve as
a reference for later comparison. Barring cases of badly mismatched circuit
compatibility, attempts to evaluate component quality by subjective listening
will yield randomized results. The ear cannot serve as a viable accuracy
indicator unless the response is monitored in a collective group setting,
administered under “double blind” test conditions, and summarized with
appropriate statistical oversight.
Another flaw innate
in evaluating audio quality by ear is that the implied goal has become so very
conflicted. The original aim was “high fidelity”, meaning faithful to the
original; i.e. accuracy. In more recent decades this zest for accuracy
has softened. The present target is more often “sound that I like”; i.e. a euphonious
sound. This state of euphony gets variously described as lying somewhere
between select extremes that are popularly labeled “too warm” and “too
detailed”, a.k.a. “too analytical”. Of course, that’s a slippery
scale, and alternate choices are likely to bob ahead dependent on the source
material, mood, hour, choice of libation, and the velocity of warp speed when
expressed in furlongs-per-fortnight.
Given this evidence,
it’s apparent that mere listening alone is not a reliable basis for
assessing the excellence of audio equipment. So, what’s a better alternative?
What’s a good way to rate equipment and system upgrades without resorting to
the groupthink blather that pervades most of the audiophile forums? Well, here
are some suggestions….
Per Toole, try
reading. Reacquaint your expectations with the glorious certainty of science.
Do some basic study of the established physics, e.g. Ohms law, impedance
requirements, voltage gain, load compatibility—the standard analog essentials
that describe operative fit and function. Determine precisely what your
equipment specifications mean; learn about their significance and the
limitations that they imply. Understand why low resistance is the only
parameter that will matter when you connect eight feet of cable between the
output terminations on your power amplifier and the input terminations on your
loudspeakers.
Seek objective
resources. Most of the audio advisory publications are hopelessly subjective,
but there are exceptions, notably the Audioholics site: https://www.audioholics.com. In addition
to competently researched product reviews they also offer intelligent tutorial
and opinion guidance; note the numerous technical articles that are cited
toward the bottom of this section that introduces the Audioholics owner
at https://www.audioholics.com/authors/gene-dellasala.
Last—buy this
reference compendium*: https://www.abebooks.com/servlet/BookDetailsPL?bi=30158293718&searchurl=isbn%3D9780415788847%26n%3D100121501%26sortby%3D17&cm_sp=snippet-_-srp1-_-title7.
It’s The Audio Expert, by Ethan Winer (Routledge, 2nd
Edition, Dec. 2017). Be absolutely certain that you buy only the new 2nd
edition (Dec. 2017); ISBN-13 9780415788847. This book is a 783 page (fully
indexed) source for “Everything You Need To Know About Audio”. The
author is a solid science-based audio engineer who subscribes to all of the
vital basics (nicely capsuled in Chapter 23). In addition, he’s a patient
psycho-acoustician who can explain to you why you felt that the sound improved
after installing those new $1,200 speaker cables. (There’s more to it than mere
confirmation bias; refer p. 100.)
*The referenced site
is that of bookseller C. Clayton Thompson (https://www.abebooks.com/c-clayton-thompson-bookseller-boone-nc/44399/sf).
This shop’s collection of books relating to military history is unique; well
worth perusing. As is Thompson’s vacation rental hideaway at https://www.petitemaisondulac.com/cabin.html.
This is a nice place to buy books, regardless of theme.
BG (July 2019)